08/07/2026 updated
100 % available
Windows & Active Directory Infrastructure Administrator
Moscow, Russian Federation
Only remote
noneOSI ModelsLinux AdministrationWindows Administration
Windows Infrastructure & Active Directory
Administration of Windows Server and Linux environments, Active Directory user/group and access management, permissions troubleshooting, file services, physical and virtual servers, VMware, and endpoint support across multi-building enterprise environments.
Network Services & Connectivity
DNS/DHCP troubleshooting, routing, VPN, SSH, NTP, network fundamentals, MikroTik/D-Link/SNR infrastructure management, connectivity analysis, and service-dependency diagnostics.
Automation & Scripting
Automation using Bash, PHP, and Python; integration with REST APIs; version control with Git; tooling with Jira and Confluence; creation of technical specifications, operating procedures, administrator guides, architecture diagrams, and runbooks.
Security & Identity Management
Application of RBAC and least-privilege principles, account and permission controls, access review, network segmentation, security-focused documentation, and information-security training.
IT Operations & ITSM
Incident and request management, RCA, escalation, service recovery coordination, performance troubleshooting, monitoring, change control, and ITIL/ITSM-oriented processes.
Vendor & Team Coordination
Leadership of developer and specialist teams of up to 30 people, vendor management, dependency tracking, change delivery, acceptance, operational handover, and technical documentation.
HelpDesk Process Development
Design and implementation of centralized HelpDesk processes for request registration, assignment, status control, escalation, and operational transparency.
Backend & Database Technologies
Hands-on experience with Nginx, Git, MySQL/MariaDB, Redis-based design patterns, and backend API development on Linux environments.
Server Hardware Management
Selection, configuration, deployment, and maintenance of server hardware with individual server configuration budgets of RUB 2-4 million.
Administration of Windows Server and Linux environments, Active Directory user/group and access management, permissions troubleshooting, file services, physical and virtual servers, VMware, and endpoint support across multi-building enterprise environments.
Network Services & Connectivity
DNS/DHCP troubleshooting, routing, VPN, SSH, NTP, network fundamentals, MikroTik/D-Link/SNR infrastructure management, connectivity analysis, and service-dependency diagnostics.
Automation & Scripting
Automation using Bash, PHP, and Python; integration with REST APIs; version control with Git; tooling with Jira and Confluence; creation of technical specifications, operating procedures, administrator guides, architecture diagrams, and runbooks.
Security & Identity Management
Application of RBAC and least-privilege principles, account and permission controls, access review, network segmentation, security-focused documentation, and information-security training.
IT Operations & ITSM
Incident and request management, RCA, escalation, service recovery coordination, performance troubleshooting, monitoring, change control, and ITIL/ITSM-oriented processes.
Vendor & Team Coordination
Leadership of developer and specialist teams of up to 30 people, vendor management, dependency tracking, change delivery, acceptance, operational handover, and technical documentation.
HelpDesk Process Development
Design and implementation of centralized HelpDesk processes for request registration, assignment, status control, escalation, and operational transparency.
Backend & Database Technologies
Hands-on experience with Nginx, Git, MySQL/MariaDB, Redis-based design patterns, and backend API development on Linux environments.
Server Hardware Management
Selection, configuration, deployment, and maintenance of server hardware with individual server configuration budgets of RUB 2-4 million.
Experience
Professional experience5 - 10 years
Freelancer since2024
Languages
EnglishGoodRussianNative speaker
Project history
Operational responsibility for infrastructure and digital services supporting 100-150 employees. Administering Windows Server/Linux infrastructure, Active Directory, physical and virtual servers, storage, file services, networks, VPN, telephony, endpoints, and business-critical internal applications across 7 buildings. Developing the corporate HelpDesk process, leading 5 developers, coordinating up to 10 specialists and vendors, and producing technical documentation.
High-load telecom environment; internal infrastructure automation and service operations. Led delivery of an end-to-end network-device provisioning service combining a mobile workflow, backend REST API, automated configuration, and post-change validation. Reduced service activation lead time from up to 4 days to 15 minutes. Contributed to Bash and PHP automation, backend APIs, and internal services on Linux. Coordinated project groups of up to 30 specialists.
B2B technical consulting and support for telecom customers.